Friction draft-rigging.



J. OCONNOR. FRIGTION DRAFTy RIGGING. APPLICATION HLBD MAY 9, 1910.

1,048,729. Patented Deo. 31,1912.

2 SHEETS-SHEET l.

INVENTOR WTNESSES H/S HTTORNEYS.

J. F.l OCONNOR.

FRIGTION DRAFT, RIGGING. APPLIQATION FILED 11H9, 1910.

1,048,729. Patented 1100.31, 1912.

2 SHEETS-SHEET 2.

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f\. /NVEN TOR' fm V H/s ATTORNEYS 'part of this UNITED 'STATES PATENT oFFIeE.

JOHN 1r. o'colmon, or cmcaeo, ILLINOIS, 'assIoNon To WILLIAM II. mmm, oir

' CHICAGO, ILLINOIS..

rnIoTION :amr-mesme.

Specification of Letters Patent.

Patented Dec. 31 1912.

Application led lay 9, 1910. Serial No. 560,118.

To all whom 'it may concern.'

Be it known that I, JOHN OCONNO'R, a citizen'of the United States, residing' at Chicago, in `thecou-ty ofCook and State of Illinois, have invented a newand useful Im rove'ment in Friction Draft-Rigging, of which the following is a specification.

My invention relates to in friction draft rigging.

Thelobject of my invention is to provide a friction draft-rigging of a strong, simple, eflicient ahd durab e construction, composed of few lparts ofeoonomical manufacture. a Mymvetion consists in the novel constiuot'ionof parts and devices' and 1n the novel combinations of parts and devices herein shown. and described and by which I accom lish this object or result.

In t e accompanying drawing forming a s eciiication, Figure 1 is a side elevation, peril in central, vertical, longitudinal section o a frictiondraft riggingk embodying my'invention. Fig. a2 is a plan vie'w, partly in horizontal section. Fig. 3 isa cross section on the broken line 3 3 of F' 2. Fig. 4 is a cross 'section on the bro enline'4--4 of Fig. 3.4 Fig. 5 is apertive view of the carrier `or tie-plate. ig. 6 is a detail, I,perspective view of the friction cylinder. ig. 7 is a detail perspective view of the removable head or' plate of the friction shell. f Fig. 8 is a detail perspective viewof the front follower. Fig. 9 1s a detail perspective vview of the draft yoke. Figs. 10 and 11: are detailp'erspective views of one of the \friction shoes,'1ooking from o posite sides. Fig. 12 is 'a detail perspect ve View of the wedge Fi 13 is a detail perspective `view of one of t e anti-friction rollers and Fig. 14 is a detail perspectiy view of one of the roller saddles. In'the drawing, 1, 1 are the center sills or other members-of the carframe to which the draft rigging is applied, 2 the front or end sill, 3 stop members secured to the sills 1 by :rivets 4 or other suitable means and against which the followers abut.

is the draw-bar and 6 the draft yoke secured thereto in the usual or any suitable manner. y

'7, 8 are the springs, the small one nesting within ,the larger. A

l is a longitudinally movable friction shell of oblong or rectangular cross. section externally adapted to fit between the center sills 1 and Ahavin an integral follower acting member or s oulder 11 and s ring inclosing member or case 12 and provided with two segmental circularly curved or cylindric friction faces 13, 13, the friction surfaces being, preferably each of the same radius,

'struck about `centers"14, 15 spaced apart external segmental cylindric friction faces 19 in sliding` frictional engagement lwith the internal segmental cylindric friction faces 13 of the friction shell. Each of the friction shoes 18 is preferably furnished with an extension 18* at itsinner end to give it a more extended frictional bearin or engagement with the internal friction ace 13 of the friction shell. Each of the friction shoes is furnished with an inner Wedge face 20 for coperation with the corresponding wedge face 21 of the wedge 22 and the interposed anti-friction roller 23 and roller saddle 24- The roller saddle 24 has an extended flat Win or blade 25 loosely adjacent to the wed face 20 of the frictlon shoe 19 and a fiat b ade or wing.

26 loosely adjacent to the wedge face 21 of the wedge 22 and also connecting flanges' 27 for engagement with the ends of 'the ant-ifriction rollers 23. The Wings or blades 25, 26 thus give the roller saddle 24' an extended bearing at its end against vthe straight or fiat ,connecting face 16 of the friction shell' 10, thus preventing the saddle tilting or skewing' and causing. it always to remain in an upright position, and the roller 23 always at right angles to the draw-bar or line of draft. The'wedge 22 has a curved shoulder 28 to aid in keeping the roller and saddle in proper position and the shoe 20 hasa covoperating stop 28n for theroller.

29 is the front follower i terposed between the rear end of the draw-lar and the wedge 22 and adapted to engage the front stops or' shoulders of the stop members 3. The ob- `long form of the friction shell in cross section and the' spaced apart centers 14, 15 about which the segmental cylindric internal 'hell is provided at each shouldt'as or memfoas enalurd to dispense en- ,te piece rear follower as the frirtioa shell are exe of the ,stop member-1 il, @closing member or section n shell is preferably cylinutet'nally and externall)Y and st the size or dian'ieter required i, dating the larger spring 7, thus vatlttpiate depth or e.' t to the ll of the friction she for proper against, the rear stop shoulders.

At ilioir rea r ends, the springs 7. tu' bear *nd a removable head or plate 3() which arnishcd with a boss 3l on its inner face for entero 'u' supporting the rear end of the inner .spring 8 and which lits in suitable guides or grooves formed in the friction shell l0 at the rear end of its spring case member lf2, the friction shell having a slot 33 in one side furnished with an enlargement l-'l to accommodate the boss 3l, and tho-1 et.: die head 30 to be removed and 35 replaof Yin required. rod or connection Y, l this through the springs', wedge 22 and t Y'able plate 3U, thus holding all the paris -ntblcd within the friction shell and the ci 'ugs under an initial tension or on, preferably of one half inch or sull-leicht to automatically take l`lie wedge has a central recess Elt to recente the head 37 ofthe rod 35, which is furnished with a threaded nut 38 at its rear end.

To assemble the parts Within the friction shell 10, the larger spring 7 is first inserted from the rear end of the friction shell, then the removable head or plate 30 is inserted in place and then the smaller spring is insei-ted through the opposite end of the friction shell, and then the friction shoes and Wedge and connec'ting rod 35 are put in place; then the springs are initially compressed anol the nut 38.applied, thus connecting all the parts.

As the spring 7 is of larger exterior diameter than the distance between the fiat or parallel interior faces 16, 16 of the friction shell at the friction face end thereof, the springr 7 is put under a slight tension or compressed sufficiently to enable the plate 30 to be inserted and its boss 31 pass the end of the spring. And when the smaller spring 8, friction shoes-.wedge and connecting rod for engagement with the.

vany separate fastener or securing device to 1" from slipping out ofprevent the hea the shell 10 tr sely.

f\s the followet :ing shoulders All of the friction .shell are at the rear ends of the 'friction surfaces l), lli and near the ends of the syn-ings, and as no space is required for a separate piece rear follower, the front and rear stop shoulders may be placed relatively close together, thus erom-mixing space.

"l'lie lower limb or member l5 of the draft yoke t3 rests and reciprocates upon the carrier or tie-plate 32 which is secured to the flanges of the center sills l by short removable bolts 33 which pass through the lower flanges of the center sills.

l claim:-

l. ln a friction draft rigging, the combination of a dra w-bar, draft yoke and stop members, of a longitudinally movable friction hell of oblong cross section externally and ha\ ing a pair of longitudinally extending intcrnah segmental, cylindric friction faces` struck about centers spaced apart, said shell having intermediate connecting faces between its friction faces, friction shoes within the shell, a wedge, a pair of anti-frit'titm rollers interposed between the wedge and the friction shoes said rollers eX- tending transversely to said intermediate connecting faces of the shell and a spring within the friction shell acting against the friction shoes, said friction shell of oblong cross section enabling said rollers7 Wedges and shoes to be of relatively large size, substantially as specified.

2. ln a friction draft rigging, the combination of a draw-bar, draft yoke and sto members, of a longitudinally movable friction shell of oblong cross section externally and having a pair of longitudinally extending internal.v segmental, cylindric friction faces struck about centers spaced apart, said shell having intermediate connecting faces between its friction faces, friction shoes within the shell, a wedge, a pair of antifriction rollers interposed between the Wedge and friction shoes said rollers extending transversely to said intermediate connecting faces of the shell and a spring Within the friction shell acting against the friction shoes, and roller saddles havinor Wings fitting loosely between the wedge faces of the friction shoes and wedge said saddles havl ing end faces engaging said intermediate connecting faces of said shell substantially as specified.

3. In a friction draft rigging, the combination of a draw-bar, draft yoke and stop members, of a longitudinally movable` frietion shell of oblong cross section externally and having a pair of internal, segmental, cylindric friction faces struck about centers spaced apart, said shell having intermediate connecting faces betweertits friction faces, friction shoes withinthe shell, a wedge, a pair lof anti-friction rollers interposed between the wedge and the friction shoes and a spring within the friction shell `acting against the friction shoes, and roller 'saddle-s having wings fitting loosely between the wedge faces of the frlction shoes and wedge, the end faces of said saddles e aging said intermediate .connecting faces o said shell, substantially asspecified.

4. In a friction draft rigging, the combination with a friction shell Yhaving a pair of y .internal segmental cylindric kfriction faces struck about centers spaced apart with intermediate connecting faces between its friction faces, of friction shoes within the shell having coperating external friction faces, a wedge, anti-friction rollers interposed between the wedge and friction shoes and roller saddles having extended `wings for engagement with the wedge and friction shoes, the end faces of said saddles cooperating with said intermediate connect- 'ing faces of said shell Vto prevent the sad*Y dles from tilting, substantially as specified.

5. In a friction draft rigging, the combination with adraw-bar, draft yoke and front and rear stops, of a friction shell having a (pair of opposing curved friction faces space apart, said shell having intermediate connecting portions between said friction faces, friction shoes having external curved friction faces en aging said curved friction faces of the friction shell, a wedge acting to in'position, substantially as specified.

6. In a draft rigging, the combination with inner and outer springs, a shell inclosing said springs and a removable head for one end of said shell having a projection on its inner side for engagement with the end of the inner springto support the spring and cause the spring to lock the removable head in position, substantially as specified.

7. In a draft rigging, a `spring case having a slot and guides to receive a removable head at one end, and a removable head for said case having a'projection on; its inner Side to support a spring and cause the spring to lock the head in position, substantially as specified.

8. In a draft rigging, having a wedge, a friction shoe and an anti-friction roller interposed between the shoe and wedge, a roller saddle having extended wings fitting loosely between the shoe and wedge, substantially as specified.

9. In a friction draft rigging, having a friction shell, a friction shoe, wedge and anti-friction roller interposed between the shoe and wedge, a roller saddle having means for engagement with the roller and an extended end face for engagement with the friction shell to prevent the saddle from tilting and cause it to hold the .roller in proper position, substantially as specified.

JOHN F. OCONNOR. Witnesses:

PEARL ABRAMS,

H. M. MUNDAY.

copies o! this patent may be obtained for ve cents each, byladdressing the Commissioner of Patents, Washington, D. C. 

